About Us

Meet Our Audiologists



Erica Hansen, AuD, CCC-A, F-AAA, completed her Bachelors in Speech and Hearing Science at the University of Arizona and her Doctorate in Audiology from Central Michigan University. She has worked in a variety of settings including private practice, ENT, and hospital. Prior to joining the clinical faculty at the University of Arizona, Dr. Hansen lived and worked in New Zealand as a clinical audiologist and as a trainer for a hearing aid manufacturer. In addition, she taught online and in person for Northern Arizona University. She has an interest in philanthropy which has taken her on humanitarian audiology volunteer trips to Panama, Fiji, and Mexico. In 2014, she was selected as a member of the Jerger’s Future Leaders of Audiology (JFLAC) class.


Tom Muller, AuD, CCC-A, F-AAA, is originally from Colorado, where received his Bachelor’s degree from the University of Colorado in Boulder in 1988. He then moved to Tucson and received his Master’s degree from the University of Arizona in 1990 and ultimately his Doctorate of Audiology in 2002 from the Arizona School of Health Sciences. Dr. Muller was, for seven years, Director of the Audiology Department at Thomas-Davis Medical Centers in Tucson. Tom has been with the University of Arizona Department of Speech, Language, and Hearing Sciences since 1997, initially as a Clinical Instructor and ultimately as Clinical Associate Professor and Coordinator of Clinical Education for Audiology. In the clinic, he works primarily adult hearing impaired population, hearing aids and cochlear implants. He is responsible for coursework regarding hearing aids, cochlear implants and hearing conservation. His clinical and research interests include the psychosocial implications of hearing impairment in the elderly and advanced hearing instrument technology.

Dr. Muller manages the Pima County Hearing Aid Bank, a cooperative program of the Sertoma, the Community Outreach Program for the Deaf and the U of A Hearing Clinic through which low-income individuals can obtain hearing aids at a very low cost. He is a commissioner for and past chair of the Arizona Commission for the Deaf and Hard of Hearing, and is a member in good standing of the American Academy of Audiology, the American Speech-Language-Hearing Association and the Arizona Speech-Language-Hearing Association. In 2010 he won the University of Arizona’s College of Science Innovation in Teaching for his work developing a model of clinical provision and supervision to foster independence in 3rd year AuD students. In 2011 he won the Larry Mauldin Award for Excellence in Education, a national award given to one audiologist each year.


Linda Norrix, PhD, CCC-SLP, received her bachelor’s degree from The University of WI-Madison, her master’s degree from Denver University, and her PhD from The University of Arizona. She joined the University of Arizona's Department of Speech, Language, and Hearing Sciences in 2002 after completing post-doctoral training at the UA in the Speech Perception Laboratory of the late Dr. Kerry Green. Her clinical, teaching, and research interests and expertise are in the areas of Pediatric Audiology.

At the graduate level, Dr. Norrix teaches the Advanced Audiological Evaluation Lab and Pediatric Audiology. She has had 15 publications in peer-reviewed journals since 2012.

Over the last 10-14 years, Dr. Norrix’s primary role has been to mentor student clinicians at off-site clinics, including Ocotillo Learning Center in the Sunnyside School District, and Tucson Medical Center. At Ocotillo Learning Center, Dr. Norrix teaches graduate student clinicians in best practice for performing hearing screenings for children currently attending the preschool, and for children being evaluated through Child Find for preschool services. At Tucson Medical Center, she mentors graduate student clinicians who are learning to perform and interpret pediatric diagnostic tests, including behavioral techniques and the physiological methods of otoacoustic emissions and the auditory brainstem response. In addition, Dr. Norrix trains our graduate students in the importance of cross-check principles and how to make clinical decisions and recommendations that will improve the overall well-being of the infant or child.


Aileen Wong, AuD, CCC-A is a Clinical Instructor in Audiology and a Research Audiologist in the Department of Speech, Language, and Hearing Sciences. She holds a blended position and spends her time instructing audiology graduate students in the on-campus clinic and conducting research in Dr. Nicole Marrone’s Audiologic Research Laboratory. As a clinician-scientist, Dr. Wong’s research informs her clinical practice, and her experiences in clinic guide her research.

Dr. Wong also serves on the SLHS Department’s Equity and Inclusion Committee. She earned all three of her degrees from the University of Arizona including a Bachelor of Science in Speech, Language, and Hearing Sciences, a Bachelor of Arts in Religious Studies, and a Doctor of Audiology. She also has completed the American Board of Audiology’s Certificate Holder-Audiology Preceptor program. Dr. Wong’s professional interests include health care disparities and service for diverse populations, increasing access to resources for minority/under-resourced populations, health literacy, and the role of peer/family support in treatment.


Image of Amy Wheeler smiling

Amy Wheeler AuD, CCC-A, F-AAA is a graduate of Utah State University and joins UA following 14years of working as an audiologist in an ENT setting. In addition she has been supervising students in a clinical setting for the past 5years and looks forward to expanding her skills in clinical supervision.